Development of Multilayered Bandpass Filters With Multiple Transmission Zeros Using Open-Stub/Short-Stub/Serial Semilumped Resonators

This paper proposes novel multilayered bandpass filters with multiple transmission zeros. These filters are developed with the assistance of semilumped resonators. Moreover, three resonant structures, i.e., open-stub, short-stub, and serial semilumped resonators, used for transmission zeros are provided as well. The fabricated examples are in agreement with theoretical predictions; therefore, our proposed circuits are validated.